Mortise bolt lock



1 July 14, 1931. M. FALK 1,814,302

MORTISE BOLT LOCK Filed April 10, 1930 2 Sheets-Shea! 1 July 14, 1931. M, FALK 1,814,302

' MORTISE BOLT LOCK Filed April 10, 1950 2 Sheets-Shea! 2 Patented July 14, 1931 -UNITED STATESPATENT FFHC E MORRIS FALK, or FITCHBURG, ivmssacnesnrrs MORTISE BOLT LocK Application filed April 10, 1930. Serial No; 443,200.

' This invention relates to a lock provided tainer, looking in the direction of the ar- With a knob on the inside of the 'door and row 10 in Fig. 8; 4 the key is insertable from the outside for Fig. 11 is a view similar to Fig. 8 but at operating the bolt and locking and unlockr ght angles thereto showing thekey inpo- I '5 ing it. sltlon and the plug pushed in, and p The principal object of the inventon is to 1g. 12 is a side view of the pinion used in provide means whereby the bolt can be opthls form. erated b th k b t all ti hen the key In the form shown in the first seven figures, is not inserted and pushed in, thus giving a e lock 1s made in a general way like the 10 person inside the house control over the door l kS of this type now on the market. A cyle E if l k d o th t id 7 V inder 1 0 isprovided integral with a face plate Other objects of the invention are to pro- 11 which s secured to the door by bolts 12 id n h b he the ke i i ted having their heads located in conical openings the plug can be pushed in thereby and means 111 a plate 13 on the inside of the door. "On

"- fo connecting h l ith th b lt operthis plate 13 is swiveled a knob 14 and the e5 i means h th l i h d i so end or the elongated pinion 15 is held in the that the bolt. can be operated. by turning the k110i) wsted position by a screw 16 and key; "to provide meanswhereby the bolt cana 1i 11. This pinion W111 tu always with c. not be operated from the outside unless the h flq and the knob can be adw t d along I 20 key and plug are pushed in a short distance 111218 P1111011 WllQIl lock. is assembled to pTO- 7G and to provide a convenient separable con- Vlde for rS of dlilerent thicknesses. The nection between the plug and the pinion for bolt 7 h s a head resting 111 recess t th that p p front or: the knob. It screws into the end of Other objects and advantages of the inthe l 9 g l h he rew 16 vention il appear h i ft v holdsthep nion n ad usted position. 75 Reference is to be had to the accompany- T 131111-011 1 engages a rack 36 .on th drawings, in i h bolt 37 in the usual way to operate this belt lg. 1 is a diametrical sectional vlew of a i the k p In i of h lock constructed in accordance with this inthe P1111011 1s plovldedwlth tongue 18 vention; V v V onits end. This is shown in the present case '80 Fig.2 is a sectional view on the line 2-'2 as dlametrlcfil- I of F1 g. 1; p In the'cyhnder 10 1s located the usual plug Fig. 3 is a sectional View on the line 3-3 20 p e Wlth loPklng l b 2 P of Fig V v I V ated by key22. Th'lS plug 1s provided with Fi -4 i an d i f th l d a retainer 23 at lts outer end which is jpro- 85 i a Fig. 7 is a similar View of the cylinder with tainer, taken from the end indicated by the Vldedj W h lot 24. This retainer t d arrow 4 in Fi 1; 1 beyond the circumference of the plug and is Fig. 5 is'a side View of the adjacent ends ii e d a recess 1n the dp e d 40 of theplug andpinion showing in dotted lines 2 ti a thine/$01161 Whlcn y be lnte- 0 how they are connected together; W1 l p Hg or secured thereto, P Q- Fig. 6 is a view similar to Fig. l but show- Vents the w'lthdra'wal of the P v Outward- 1 l but does no, orevent 'ts m ng the key in position and the plug pushed The inwmtd i g i ii 1n; the condition shown in Fig. 1 is preveiited by the last one of the levers 21 abutting against 'a shoulder 19 in the cylinder, so that the plug removed 8 is'an end View OfF ig-F; in this position the plug cannot be pushed Fig- 9 1s a vlew sl r to F g- 1 b t shOW- in. This is the locked condition and the bolt ing a modlfied construction; can be operated freely by theknob 14 inside.

" Fig. 10 is an end view of the plug and re- N owyi r" it is desired to unlock the'doo'r'from the outside, the key has to be inserted as shown in Fig. 6 to push all the locking tumblers 21 inwardly and thereis now nothing to prevent the pressure of the key inwardly, forcing the plug inwardly into the position shown in that figure, except of course that until the slot 24 registers with the tongue 18. This tongue will prevent such motion. When the plug is turned by the key so that these two parts register, the plug can be moved in by pressure of the key to the position shown in Fig. 6. Now the tongue and slot form a posi tive connection between the plug and the pinion so the turning of the plug further will operate the pinion and the bolt. The parts of course are arranged so that the key cannot be removed unless the bolt is either all the way in or all the way out. 7

Figs. 7 and 8 show the inside of the cylinder having a shoulder 30 located at a short distance back of the place where it is usually located. This is to allow a little motion of the plug inwardly.

In the form shown in Figs. '8, 9, 10 and 11 the partsare very similar to those shown in the first seven figures, but the pinion 15, instead of having a tongue in the end, is provided with a diametrical slot 25 across its end and with a recess extending in axially from that end in which is located a coil spring 26.

On the plug 20 is located a projection 27 having a stud 28 adapted to enter the recess and engage the spring 26 and a cross bar 29 which constitutes a tongue for entering the slot 25 when the tongue is turned to the right position. The result is the same as in the other case and the action is the same, the only difference being that the slot and tongue are reversed and in this latter case the spring presses the plug back whenever it is free to do so. In the preferred form shown, the key has to be pulled back and the plug with it but, of course, the key cannot be removed without pulling the plug back into proper position.

In either case, this constitutes a very simple way of providing for full freedom of control door is locked on the outside or not, andit gives full latitude in locking and unlocking made therein by any person skilled in the art the look from the outside. Y r

Although I have illustrated and described only a single form of the invention I am aware of the fact that modifications can be without departing from the scope of the invention as expressed in the claims. Therefore, I do not wish to be limited in this respect but what I do claim is 1. In a lock, the combination with a cylinder, a plug rotatably and slidably mounted therein, locking tumblers in the plug, the cylinder having a shoulder against which the last locking lever on the plugengages when theflevers are in locking position, to prevent the sliding of the plug inwardly, a

retainer on the inner end of the plug, said cylinder having a shoulder against which said retainer engages when the plug is moved out to its outermost position, and a bolt operating device rotatably mounted, the retainer and bolt operating device having inter-engaging means for positively connecting togetherso that the turning of the plug by its key will operate'the bolt.

2. In a lock, the combination with a cylinder and a plug therein, said plug having a transverse tongue extending from the inner end thereof, of a bolt operating device comprising a rotatable member having a transverse slot into which said tongue is adapted to project when the plug is forced inwardly, so that the bolt operating member and the plug are positively connected for operating the lock anda spring in the slot'for normally pushing said tongue outwardly.

3. In a lock, the combination with a cylinder and a plug therein, said plug having extending from the innerend thereof a transverse tongue and a central stud, of a bolt operating device comprising a rotatable member having a central recess in its free end into which said stud projectsat all times, a spring in said recess for engaging said stud and pushing the tongue outwardly, the end of said bolt operating member having a transverse slot into. which said tongue is adapted to project when the plug is forced inwardly, so that the bolt operating member and the plug are positively connected for operating the lock.

4. In a lock, the combination with a bolt, a knob and a pinion adjustably connected with the knob for operating the bolt, of a lock comprising a plug rotatably and slidably mounted on the side of the door opposite the knob, and means whereby the plug will be positively connected with the pinion for reciprocating the bolt by'the keyof the lock when the key is inserted and pressed inwardly to move the plug in toward the bolt 'operating means. of the bolt by the knob inside, whether the 5. In a lock, the combination with a bolt having a rack,'-of an elongated pinion meshing with the rack, a knob into which the end of the pinion extends, said knob having a recess in the endand a bolt extending axially into the knob and having its head resting in said recess, the correspondingend of the pinion having a screw-threaded opening therein for receiving the bolt, whereby the bolt can be turned to adjust the position of the pinion longitudinally with respect to said knob to accommodate the'lock to doors of different thicknesses. I

In testimony whereof I have hereunto aflixed my signature.

MORRISFALK.

inf 

